A boat or vehicle with two battery banks needs two independent chargers — or one WaveCharge. The Battery Tender® WaveCharge 2-Bank is a marine and automotive-grade on-board charging system delivering two completely independent ISM (Infinite Sequential Monitoring™) charging circuits at 3 Amps each, simultaneously maintaining a starting battery and a house battery without interference between banks.

Built for Multi-Bank Electrical Systems

Many boats and vehicles run at minimum two separate battery banks — a dedicated starting battery for the engine and a house battery bank for electronics, accessories, and auxiliary loads. These batteries have different usage patterns, different charge states, and different maintenance requirements. Connecting them to a single-bank charger either undercharges one or overcharges the other. The WaveCharge 2-Bank runs two independent ISM cycles simultaneously, each responding to its own battery's state at full 3 Amps output.

Independent Banks — Not a Splitter

Each bank operates as a complete independent 3 Amp charging circuit. Bank 1 can be in bulk charge recovering a depleted house battery while Bank 2 is in float maintenance on a fully charged starting battery — simultaneously, without output reduction on either bank. This is the critical distinction from shared-output charging systems.

Multi-Chemistry: Lead-Acid and Lithium

A per-bank chemistry selector delivers the correct ISM profile for either lead-acid or Lithium (LiFePO4) batteries. Each bank is configured independently — Bank 1 can charge a lead-acid starting battery while Bank 2 maintains a Lithium house bank. Full 3 Amps output at the correct chemistry profile on each bank simultaneously.

ISM: 4-Stage Charging on Each Bank

• Initialization — Individual battery health check before current flows on each bank
• Bulk Charge — Full 3 Amps output restores depleted capacity independently
• Absorption — Current tapers per bank as each battery approaches full charge
• Float Maintenance — Correct maintenance protocol for the selected chemistry delivered 24/7, indefinitely

Compatible per bank: 14Ah to 100Ah at 12V. Lead-acid: flooded, AGM, gel cell, sealed MF. Lithium: LiFePO4.

IP67 Marine and Weatherproof Construction

IP67 certification provides complete dust protection and water immersion resistance to 1 meter for 30 minutes. The WaveCharge 2-Bank is designed for permanent installation in marine and automotive environments — engine compartments, battery compartments, and below-deck or under-hood locations where moisture, condensation, and spray are routine.

Applications

• Boats with separate starting and house battery banks
• Trucks and SUVs with dual battery systems
• Overlanding and expedition vehicles with auxiliary battery banks
• Camper vans and custom builds with house and starting batteries
• RVs and campers with two-bank 12V systems
• Personal watercraft with dual battery configurations
• Any two-bank 12V application requiring independent simultaneous charging

Automatic Temperature Compensation

Charge voltage adjusts automatically based on ambient temperature on each bank for lead-acid applications — ensuring complete charging in cold conditions and preventing overcharge in summer heat, without manual adjustment.

Safety Features

• Spark-proof connection on each bank
• Reverse polarity protection per bank — incorrect connection on one bank does not affect the other
• Short-circuit protection per bank
• IP67 sealed housing

2-Year Limited Warranty | DeLand, Florida Since 1965